Dust-arresting radiator shield



April 15 1924.

M. A. GARRETT DUST ARRESTING RADIATOR SHIELD Filed May 5, 19 25 2 Sheets-$heet 1 It.llvlltliiiriiilll'llilIltlr jun/ante Patented Apr. 15, 1924.

UNITED STATES PATET FFICE.

MYERS A GARRETT, OF CHICAGO, ILLINOIS, ASSIGNOR OF THREE-FOUR'IHS TO CARL- TON M. GARRETT AND ONE-FOURTH T0 WALTER S. ADAMS, BOTH OF CHICAGO,

' ILLINOIS.

' Application filed May 3,

To all whom it may concern:

Be it known that I, MYERS A. GARRETT, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Dust-Arresting Radiator Shields; and I do hereby declare the following to be a full, clear, and exact descrlption of the invention, such as will enable others skills-d in the art to which it appertains to make and use the same.

The object of the invention is to prevent the blackening and discoloration of the walls of rooms, in which steam or hot water radiators are used, by the deposition thereupon of dust carried by the currents of air caused by the heat of the radiator.

Another object is to free the air of dust as a sanitary measure, for dust includes diseasecarrying germs which are inhaled w1th the air.

Still another object is to prevent the depositi-on of dust upon articles of furniture, ornaments, rugs, curtains, etc., within the room near orremote from the radiator.

It is well known that the heated air adjacent steam and hot water radiators, being lighter than the air more remote therefrom, ascends in the form of currents which repeatedly pass over the heated surfaces of the radiator. These air currents impart motlon to and carry along with them dust which is intermingled with and diffused throughout the air and deposited upon the surfaces of the room and articles contained therein, both adjacent to and remote from the radiator. Rough surfaces near the radiator where the air currents have the greatest velocity catch and hold part of the dust and in more remote parts of the room where the air cur-. rents are of less velocity the particlesof dust are deposited under the action of grav- Sheet metal shields have been employed to protect the wall adjacent the radiator, but they do not perform the function of removing the dust from the air, as the surfaces of such shields are generally relatively smooth and do not catch and retain the dust, but simply reflect it, the dust rebounding therefrom and still intermingling and circulating with the air.

As particles ofdust are heavier than the air with which they are commingled, when DUST-ARRESTING RADIATOR SHIELD.

1923. Serial No. 636,404.

the dustladen aircurrents strike an object havlng a relatively rough or irregular surface the dust is not deflected, but for the I I have devised means which utilizes the above stated principle whereby the dust in [the air currents is caught and arrested and deposited or held while the, air passes on. This means, broadly stated, consists of a specially' constructed frame having a removable cover, which frame and cover when in position on a radiator extends down the back side of the radiator adjacent the wall entirely to the floor and also over the top thereof and downwardly at the front and ends the necessary distance to prevent the outward side passage of the rising air currents which are thus confined within thetop space or hood thereof and discharged through perforations inthe same. The surfaces of the frame facing the radiator are provided with irregular or uneven or relatively rough material, whatever the material may be, which when struck by the moving particles of dust catch and retain them while the air passes on. The under surface of the cover is also provided with means having a dust-catching and retaining surface or surfaces. The material preferably used in connection with the frame and cover for frictionally catching and retaining the dust is a fireproof fabric with a rough or fuzzy surface, and said fabric preferably is provided with folds, plaits, pockets or tucks. Burlap is one kind of fabric which may effectively be used for the purpose.

The accompanying drawings illustrate a specific example of the embodiment of the invention constructed and the parts combined for performing the required function of catching and retaining particles of dust moving in and with air currents, the same as it appears when the cover is removed in F i 2.

Figure 4 is a bottom plan view of the removable cover with the dust-catching frame in place within the cover.

Figure 5 is a part plan view of the frame removed from the cover. 1

Figure 6 is an enlarged cross section of Figure 4 on line 66.

Figure '2' is an elevation View of the back portion of the frame which is located at I the rear of the radiator.

Figure 8 is a horizontal cross section of Figure 7 v Figure 9 shows the ornamental moulding or apron detached from the lower part of the frame which is shown below.

Figure 10 is a view of one of the filling blocks.

A radiator R is shown by Figures 1, 2 and 9 of a common type to which my dustarresting shield or device, as a whole, is applied.

The said device includes three main parts, to wit: the upright F or frame carrying the dust arresting material 5 and ornamental apron M secured thereto, the former being vertically disposed at the back'of the radiator, and the ornamental apron or moulding M horizontally disposed at right angles to the part F, said apron extending downwardly at the front and ends over the top of the radiator; the removable cover C; and thedust-catching frame N located between the cover and top'of the radiator or carried by the cover.

The part F consists of a rectangular frame 1 to which are secured angle iron legs 2, 2, the legs extending to the floor back of the radiator and united by a brace 3, two supporting crossbars t, 4 secured at their ends to the frame 1 and engaging the top of the radiator whereby the frame 1 is held in proper position, and the fireproofdust-catching and retaining'fabric 5 secured to the angle iron legs by rivets 6, the said fireproof dust-arresting fabric preferably being fastened into folds or tucks or pockets 7 forming recesses opening downwardly, as shown. The ornamental'moulding on apron M laps over the front and ends of the radiator and is secured at its ends to the angle irons 2, 2 by rivets 8, 8. It has series of perforations 9 through the same at the front and ends, see Figure 9, which are covered on the inside by a fireproof dust-arresting fabric 10, see Figure 2.

' Twofdiing blocks 11, see Figures 10 and 2, are inserted between the crossbars 4, t, radiator, and apron M at each end, and secured crosshars 4, 4, to prevent the part F and apron from displacement or sagging, especially at the front. The angle iron legs extending to the floor, crossbars and the blocks hold the frame and apron in a stable position relative to the radiator. The fabric 5 extends downwardly to the floor so that air cannot pass beneath its lower edge into the space between the said fabric or frame F and the wall. When the wall back of the radiator is of tile or marble it becomes very hot, and unless the space between the same and the radiator be securely closed the dust-laden air beneath the radiator would pass to this space and upwardly withoutcoming in contact with the dust-arresting fabric.

The frame, angle legs, ornamental apron and filler blocks'being united can be lifted vertically and removed from the radiator.

The cover C is rectangular in shape and has flanges 13 lapping over the top edge of the ornament-a1 apron or moulding M, as shown by Figure 2. A frame N covered with fireproof dust-arresting textile fabric 15 is located between thecover and the radiator. This fabric is fashioned with folds or tucks 16 at the under surface, as shown by Figure 2. Preferably this frame- N is secured to the cover by tongues 17 of ductile metal, such as copper, located on the cover, which tongues can be bent over to hold the frame in place and be bent reversely when the frame is to be removed. See Figure 4, an inverted lan view of the cover with the frame hel in position by the tongues. Figure 5 shows the frame removed from the cover.

The mode of operation is as follows: The air around the radiator, becoming heated, rises in a continuous current, taking up the dust with it by suction and part of the air comes in contact with the dust arresting material of the shield at the back of the radiator which material catches and retains the dust. The rising air passes into the space at the top inclosed by the cover and the downwardly extending apron, which forms a hood or housing, where the particles still in the air strike the dust-arresting material on the frame and are arrested and held by friction. The air reflected or baffled by the cover then passes through the dustarresting material 10 and the perforations 9 in the ornamental apron and intermingles with or is diffused throughout the air of the room. The fabric 10 insures the removal of the greater portion of the dust from the as cending current of air not previously arrested.

The shield as a whole can be removed from the radiator for cleaning the dust-arresting fabric, or the cover carrying the removable frame be removed prior to the removal of the hack frame and apron. As there is a continuous circulation of the air in the room over the fabric of the shield the heated air rising to the ceiling and the cooler air near the floor moving to and up through the shield, a greater portion of the dust and It will be noted that the dust-arresting fabric employed is preferably folded in tucks or plaits with the open spaces facing the ascending air currents, thus forming inverted pockets which will catch and hold the dust. This feature obviously increases the efiiciencyof the shield.

What I claim is: I

1. The combination in a dust catching andholding device for radiators, of a housing comprising an apron and a cover at the top edge of the apron; a dust catching and holding fabric beneath the cover; a frame d-is osed at the rear edge of the housing an at right angles thereto; and a dust catching and holding fabric carried by the frame; said apron when thedevice is in position on a radiator extending a short distance downwardly only over the front and ends of the radiator, and the frame and dust-catching fabric secured thereto at the back of the radiator extending to the floor and preventing the passage of air to the space back of the frame and fabric-carried. thereby.

2. The subject matter of claim 1 when the dust catching and holding fabric carried by the frame is formed with folds or tucks.

3. The subject matter of claim 1 when the dustcatching and holding fabric beneath the cover is supported by the saidcover and is-formed with folds or tucks.

4. The subject matter of claim 1 when the downwardly extending apron is provided with perforations or openings for the passage of air outwardly from beneath the housing.

5. The subject matter of claim 1 when the downwardly extending apron is provided with perforations with the addition of a screen inside the housing and covering the perforations in the apron.

In testimony whereof I aflix my signature.

MYERS A. GARRETT. 

